Running a Star Rupture Dedicated Server on Linux
Linux hosting should be treated as a compatibility experiment unless the current official documentation explicitly supports your distribution. Creepy Jar's published setup article is a Windows/Steam-app workflow, so a Linux Proton deployment is an unofficial workaround, not a guaranteed native Linux server.
Best operational choice: use the supported Windows path when you need predictable unattended hosting. If you choose Proton, test the exact server build, runtime, EOS authentication, restart behavior, and save persistence before moving a valuable world. Since 20 October 2026 that build is also the last one: Creepy Jar is ending active dedicated-server support, and once Update 3 ships, dedicated servers stay on version 0.3.5.
Verify the runtime first
- The downloaded app includes a server binary that launches under the chosen Wine/Proton runtime.
- EOS initialization succeeds without a desktop Steam session.
- The process binds the chosen endpoint and survives a restart.
- The active save path is known and backed up.
- You have a provider/support path for the compatibility layer.
Minimal test plan
- Install the dedicated app in an isolated directory.
- Run the official launch shape:
StarRuptureServerEOS.exe -Log -port=7777. - Capture startup output and any EOS/runtime errors.
- Connect externally, create a test change, and restart.
- Repeat after a host reboot.
- Measure long-session CPU, memory, and save behavior.
Why fixed Proton recipes age badly
Proton-GE versions, winetricks components, graphics flags, service units, and file paths are runtime-specific. A recipe copied from an older build can hide the real failure. Tie any workaround to a tested build and date, and label it unofficial.
Fallbacks
- Move the server to a Windows VM or Windows host.
- Use a managed provider that confirms the current Star Rupture app and handles restarts/backups.
- Continue local co-op until a documented native Linux path exists.
See the official setup path, connection troubleshooting, and save management. Start managed Star Rupture hosting if you want the compatibility burden handled for you.